Governor devices

ABSTRACT

A governor device comprises two rotatably mounted governor weights. An output channel member has inclined slots engaging pins in one face of the weights so that the member is displaced axially when the weights are displaced radially. An output tube is coupled to the weights, for rotation therewith, through abutment members engaging inclined slots in the opposite face of the weights so that the rotational position of the tube is advanced when the weights move radially outwards.

United States Patent Price et al.

[54] GOVERNOR DEVICES [72] Inventors: Frederick William Price; Derek Williams,

both of London, England [73] Assignee: Simms Motor Units Limited, London, En-

gland [22] Filed: Sept. 16, 1969 21 Appl. No.: 858,440

[52] US. Cl ..73/530, 73/534 [51] Int. Cl. ..G05d 13/16 [58] Field oiSearch ..73/530, 534, 551

[56] References Cited UNlTED STATES PATENTS 90,696 6/1869 Smith ..73/551 1,064,856 6/1913 Peterson ..73/530 1 Feb. 22, 1972 3,319,568 5/1967 Repko et al ..73/534 X FOREIGN PATENTS OR APPLlCATlONS 531,178 10/1921 France ..73/530 Primary Examiner-James J. Gill Attorney-Watson, Cole, Grindle & Watson [5 7] ABSTRACT A governor device comprises two rotatably mounted governor weights. An output channel member has inclined slots engaging pins in one face of the weights so that the member is displaced axially when the weights are displaced radially. An output tube is coupled to the weights, for rotation therewith, through abutment members engaging inclined slots in the opposite face of the weights so that the rotational position of the tube is advanced when the weights move radially outwards.

9 Claims, 2 Drawing Figures GOVERNOR DEVICES The invention relates to governor devices.

The present invention provides a governor device comprising a driving shaft, at least one pair of governor weights arranged to be rotated by rotation of the shaft and displaced radially to an extent which is dependent on the rotational speed of the driving shaft, and two governor output members, the first output member being coupled to the governor weights for axial displacement dependent on the radial displacement of the governor weights and the second output member being coupled to the governor weights for rotational displacement dependent on the radial displacement of the governor weights.

Preferably a first linkage is provided between the governor weights and the first output member, said first linkage comprising two abutting parts connected to the weights and first output member respectively, one said part comprising a sloping abutment surface extending along and inclined to the axis of rotation of the governor device and the other said part comprising an abutment member arranged to abut the abutment surface and cause axial movement of the first output member when the governor weights are radially displaced.

Preferably a second linkage is provided between the governor weights and the second output member, said second linkage comprising two abutting parts connected to the weights and second output member respectively, one said part comprising a sloping abutment surface extending across the axis of rotation of the governor device and inclined to a radial direction from the axis, and the other said part comprising an abutment member arranged to abut the said abutment surface and cause rotational displacement of the second output member when the governor weights are radially displaced.

Preferably in both the first and second linkages the said abutment surfaces are provided by inclined slots and the abutment members are arranged to slide within said slots, the slots in the first linkage extending along and inclined to the axis of rotation and the slots in the second linkage extending across the axis of rotation and inclined to a radial direction from the axis.

Preferably the slots of the first linkage are provided on the first output member and abutment pins are provided in fixed positions on a first side of the governor weights to engage in said slots.

Preferably the slots in the second linkage are provided in the governor weights and abutment members engaging said slots are connected to the second output member at fixed radial positions. Preferably the slots of the second linkage are provided on a second side of the governor weights opposite the said first side.

Preferably the first output member comprises a channel member having sidewalls located slidably within elongated channels in the said one side of the governor weights, the inclined slots of the first linkage being provided in the sidewalls of the channel member and the abutment pins extending across the channels in the governor weights. Preferably each sidewall of the channel member engages both governor weights and has two inclined slots engaging pins in the two weights respectively. The channel member may be connected to a pivoted lever member.

Preferably the second output member comprises a rotary device coupled to the governor weights for rotation therewith, the second linkage being arranged to adjust the rotary position of the rotary device relative to the said drive shaft.

Preferably the rotary device comprises an output shaft mounted coaxially with the governor weights and has two diametrically opposed pins each supporting a slipper member engaging an inclined slot in each respective governor weight.

The said output shaft may be provided with a cam surface.

Preferably a guide plate is secured to the driving shaft which plate has projecting arms slidably located within guide channels in the governor weights so that rotation of the shaft is transmitted to governor weights through the guide plate and the weights may move rapidly outwards relative to the arms of the guide plate. The guide plate may be of H-shape having two arms engaging each governor weight.

The invention includes fuel pumping apparatus for an internal combustion engine comprising a fuel pump and governor device as aforesaid in which the two outputs of the governor device are arranged to control respectively the fuel supply and automatic advance of the fuel supply in dependence on the speed of rotation of the drive shaft.

A specific embodiment of the invention will now be described by way of example and with reference to the accompanying drawings in which:

FIG. 1 is an exploded view of a speed-sensitive governor device embodying the invention; and

FIG. 2 is a schematic illustration of the governor device in use with a fuel pump for an internal combustion engine.

in this example, the governor device has two weights 1] and 12 arranged to be mounted on, and rotated by, a driving shaft 13. Each governor weight is generally semicircular in shape and has two planar and faces 14 and 15. The two weights 11 and 12 are similar to each other. For clarity, the device is shown in exploded form with the shaft 13 withdrawn to the left. When assembled, the shaft 13 extends through all the components shown in FIG. 1 so that they are mounted on the shaft 13.

As the shaft 13 is rotated, the weights 11 and 12 rotate and fly out radially against compression springs 16 to an extent dependent on the speed of rotation of the shaft 13. Two separate outputs are taken from the governor device. The first output is taken by a channel-shaped plate member 17 having two spaced walls 18 and 19. The walls 18 and 19 fit slidably into two spaced vertical channels 20 and 21 formed in the end face 15 of the weights 11 and 12. Two sloping slots 22 are cut in each of the walls 18 and 19 so that the slots extend along, and are inclined to, the axis of the shaft 13. A pin 23 is provided for each slot 22 and is arranged to pass through a hole 42 in each governor weight so that the pins extend across the channels 20 and 21 and engage the slots 22. The walls of the slots 22 form abutment surfaces against which the pins 23 abut so that when the weights 1] and 12 are displaced radially, the member 17 moves a corresponding axial distance along the shaft 13. A boss 24 attached to the member 17 engages an annular thrust pad 25 having a peripheral groove 26 engaging a pin 27 of a lever 28. The lever 28 is pivotally mounted at 29 and has a forked connection 30 at its upper end which may be connected to the control rod of a fuel pump.

ln order to connect the governor weights 11 and 12 to the shaft 13, an H-shaped guide plate 31 is provided. The arms 32 of the plate 31 fit slidably into two spaced vertical channels 33 in the end face 14 of each of the weights l1 and 12. The arms 32 guide the outward movement of the weights 11 and 12 and ensure that the movement is in a radial direction. The shaft 13 passes through a central aperture in the guide plate 31 and the plate 31 may be welded to the shaft to secure the plate to the shaft.

The second output from the governor weights is taken by a rotary tube 34 concentric with the shaft 13. The tube 34 carries a slipper plate 35 having two diametrically opposed projecting pins 36. Each pin 36 pivotally mounts a slipper 37 in the form of a rectangular block adapted to fit slidably in channels 38 in the end face 14 of the governor weights. The channels 38 lie between the channels 33 and extend across the axis of the shaft 13 and are inclined to a radial direction from the shaft 13. Rotation of the governor weights is transmitted to the tube 34 by the slippers 37. Any outward radial displacement of the governor weights causes additional rotational displace ment of the slippers 37 as they are held at a fixed radial distance while the sloping channels 38 move radially. This causes a rotational displacement of the tube 34 relative to the shaft 13.

The springs 16 are located in cylindrical recesses 40 in the governor weights and surround screw-threaded arms 70 which project through the recess 40. The arms 70 are attached to a central sleeve 71 which surrounds the shaft 13. Spring-retain ing plates 41 screw threadedly engage the ends of the arms 70 and control the initial loading of the springs 16.

The tube 34 may be provided with a cam, or cams, 51 (see FIG. 2) for actuating a respective piston or pistons of a fuel pump and rotation of the tube 34 relative to the shaft 13 effects automatic advance of the fuel pump. The lever 28 may be connected to the control rod of a fuel pump for controlling the amount of fuel pumped. This arrangement as shown schematically in FIG. 2. The governor device 50 is driven by the shaft 13 from an engine 52 so that the governor weights rotate at a speed dependent on the engine speed. A fuel pump 54 is arranged to supply fuel to the engine along a pipe 55. The operation of the fuel pump 54 is controlled by the governor device 50. The output tube 34 rotates a cam 51 to actuate the fuel pump piston and consequently the time of operation of the fuel pump is adjusted by rotational displacement of the tube 34 relative to the shaft 13. The lever 28 is connected to a control rod 53 of the fuel pump to adjust the amount of fuel supplied at each pumping operation.

As the governor weights fly radially outwards with increasing speed of rotation, continual balancing of the governor forces is necessary and for this purpose the controlling springs 16 are provided.

The invention is not restricted to the details of the foregoing example.

We claim:

1. A governor device comprising a deriving shaft, at least one pair of governor weights arranged to be rotated by rotation of the shaft and displaced radially to an extent which is dependent on the rotational speed of the driving shaft, and two governor output members, the first output member being mounted for rotation about the axis of said driving shaft and being coupled to the governor weights for rotational displacement dependent on the radial displacement of the governor weights and the second output member being coupled to the governor weights for axial displacement dependent on the radial displacement of the governor weights, there being a first linkage operably interconnecting the governor weights and the first output member, said first linkage comprising a part mounted on one of the weights for radial movement therewith and a part on the first output member, one of the parts comprising a sloping abutment surface disposed at an angle relative to said radial direction of displacement of the weights, the other of said parts comprising in abutment member disposed in abutting relationship relative to the abutment surface and being relatively movable therealong to thereby cause rotational displacement of the first output member relative to the shaft when the governor weights are radially displaced.

2. A governor device as claimed in claim I in which a second linkage is provided operably interconnecting the governor weights and the second output member, said second linkage comprising an element on the weights and an element on the second output member, one of said elements comprising a second sloping abutment surface extending along and inclined to the axis of rotation of the governor device, the

other of said elements comprising a second abutment member disposed in abutting relationship relative to the second abutment surface and being relatively movable therealong to thereby cause axial movement of the second output member when the governor weights are radially displaced.

3. A governor device as claimed in claim 2 wherein both the first and second linkages include inclined slots presenting the abutment surfaces, the abutment members being disposed to slide within said slots, the slots in the second linkage extending along and being inclined to the axis of rotation of the shaft and the slots in the first linkage extending in a plane disposed substantially perpendicularly to said axis of rotation and at an inclination relative to said radial direction of displacement of the weights.

4. A governor device as claimed in claim 3 wherein each linkage comprises a plurality of said slots and said abutment members, there being a member in each slot.

5. A governor device as claimed in claim 4 in which the slots of the second linkage are provided on the second output member, said second abutment members comprising pins disposed in fixed positions on a first side of the governor weights, the slots of the first linkage being provided in the governor weights, said first abutment members being connected to the first output member at fixed radial positions.

6. A governor device as claimed in claim 5 in which the slots of the first linkage are provided on a second side of the governor weights opposite the said first side.

7. A governor device as claimed in claim 6 in which the second output member comprises a channel member having sidewalls located slidably within elongated channels in the said one side of the governor weights, the inclined slots of the second linkage being provided in the side walls of the channel member and the abutment pins extending across the channels in the governor weights, each sidewall of the channel member engaging both governor weights and having two inclined slots engaging pins in the two weights respectively.

8. A governor device as claimed in claim 7 in which the first output member comprises an output shaft coupled coaxially to the governor weights for rotation therewith, said first member having two diametrically opposed pins, said first abutment members comprising slipper members supported on the pins, each slipper member engaging an inclined slot in a respective governor weight, the first linkage being arranged to adjust the rotary position of the rotary device relative to the said drive shaft.

9. A governor device as claimed in claim 5 in which an H- shaped guide plate is secured to the driving shaft which plate has projecting arms slidably located within guide channels in the governor weights so that rotation of the shaft is transmitted to governor weights through the guide plate and the weights may move radially outwards relative to the arms of the guide plate. 

1. A governor device comprising a deriving shaft, at least one pair of governor weights arranged to be rotated by rotation of the shaft and displaced radially to an extent which is dependent on the rotational speed of the driving shaft, and two governor output members, the first output member being mounted for rotation about the axis of said driving shaft and being coupled to the governor weights for rotational displacement dependent on the radial displacement of the governor weights and the second output member being coupled to the governor weights for axial displacement dependent on the radial displacement of the governor weights, there being a first linkage operably interconnecting the governor weights and the first output member, said first linkage comprising a part mounted on one of the weights for radial movement therewith and a part on the first output member, one of the parts comprising a sloping abutment surface disposed at an angle relative to said radial direction of displacement of the weights, the other of said parts comprising in abutment member disposed in abutting relationship relative to the abutment surface and being relatively movable therealong to thereby cause rotational displacement of the first output member relative to the shaft when the governor weights are radially displaced.
 2. A governor device as claimed in claim 1 in which a second linkage is provided operably interconnecting the governor weights and the second output member, said second linkage comprising an element on the weights and an element on the second output member, one of said elements comprising a second sloping abutment surface extending along and inclined to the axis of rotation of the governor device, the other of said elements comprising a second abutment member disposed in abutting relationship relative to the second abutment surface and being relatively movable therealong to thereby cause axial movement of the second output member when the governor weights are radially displaced.
 3. A governor device as claimed in claim 2 wherein both the first and second linkages include inclined slots presenting the abutment surfaces, the abutment members being disposed to slide within said slots, the slots in the second linkage extending along and being inclined to the axis of rotation of the shaft and the slots in the first linkage extending in a plane disposed substantially perpendicularly to said axis of rotation and at an inclination relative to said radial direction of displacement of the weights.
 4. A governor device as claimed in claim 3 wherein each linkage comprises a plurality of said slots and said abutment members, there being a member in each slot.
 5. A governor device as claimed in claim 4 in which the slots of the second linkage are provided on the second output member, said second abutment members comprising pins disposed in fixed positions on a first side of the governor weights, the slots of the first linkage being provided in the governor weights, said first abutment members being connected to the first output member at fixed radial positions.
 6. A governor device as claimed in claim 5 in which the slots of the first linkage are provided on a second side of the governor weights opposite the said first side.
 7. A governor device as claimed in claim 6 in which the second output member comprises a channel member having sidewalls located slidably within elongated channels in the said one side of the governor weights, the inclined slots of the second linkage being provided in the side walls of the channel member and the abutment pins extending across the channels in the governor weights, each sidewall of the channel member engaging both governor weights and having two inclined slots engaging pins in the two weights respectively.
 8. A governor device as claimed in claim 7 in which the first output member comprises an output shaft coupled coaxially to the governor weights for rotation therewith, said first member having two diametrically opposed pins, said first abutment members comprising slipper members supported on the pins, each slipper member engaging an inclined slot in a respective governor weight, the first linkage being arranged to adjust the rotary position of the rotary device relative to the said drive shaft.
 9. A governor device as claimed in claim 5 in which an H-shaped guide plate is secured to the driving shaft which plate has projecting arms slidably located within guide channels in the governor weights so that rotation of the shaft is transmitted to governor weights through the guide plate and the weights may move radially outwards relative to the arms of the guide plate. 